If you updated your iPhone 3GS to 5.1.1 and it was previously unlocked with the 6.15.00 baseband, you probably noticed that it wont pick up signal anymore and it just says “searching…” and eventually “No Service” even if there is no sim card in the iPhone itself. Follow the steps in the video below to get your iPhone up and running in no time. Don’t worry, we at iHelpCorner.com know that some instructional videos are difficult to follow so we try to make every video as detailed as possible.

It is giving me still “No Service” after doing all these steps. In my case, it is unlocked before (so, probably already upgraded to ipad baseband), now i re-flashed baseband. There is no error while installation and booting. But it is still saying no service, Please help. Only improvement after base band flashing is that atleast it is saying NO SIM CARD installed wheread before flashing it used to search automatically and saying NO SERVICE at the end.

I have tried all that is required except upgrading my baseband which is currently 0.5.16.05 and I am on 5.1.1. My serial is xx2205xxxx, so when I was in the process of upgrading the baseband, it warned me that it is not advisable if my serial is above version xx134xxx, so I cancelled the baseband upgrade via redsn0w. I only did the jailbreak and everything went well, I also installed cydia and ultrasn0w and did everything but the “NO SERVICE” is still showing, so my big question is with my serial being xx2205xxxx should I ignore the warning and upgrade the baseband?

I have run Rocky Racoon and now have an untethered jailbroken 3GS with 5.1.1 — my bootrom is older (86936). Are there new instructions now, or should I run this to fix the no service issue. Also need to enable MMS, how to do?

Hi
You may try SAM by adding http://repo.lingner.com in cydia and try to instal SAM
it did not work for me (I do not have the original sim ) may be that is why ….
Try and you may have luck more than me
enjoy if worked and don’t despair if did not work

Open redsn0w then open task manager go to process and right click on redsn0w >>affiliate >>unchecked the CPU 1 and close the task manager after that go to redn0w and do what u need ( redsn0w must not be closed during that procces )

In order to unlock 3GS 5.1.1 BB 6.15.00, just do a tethered JB with Rocky Rcoccoon, then install ultrasnow fixer first thru cydia and then finally the ultrasnow. after banging my head against wall in JB and activating 5.1.1, i finally watched the video. followed the sequence for JB and activation and then the sequence in this comment to unlock … i hope this bails out somebody from down under..

I am getting the same message. did you find a solution to it? If not, did you find another solution to fix your phone? I have the iphone 3GS and it has already been jailbroke and I had installed “winterboard themes” and thenwent and unistalled it and now I hae no serviced on my phone. Really aggrivating me. Any help you can give would be appreciated…

I am getting a “updating now” on the firmware site, what do I do at this point if it wont do anything else? I am getting so aggrivated with this phone. It is already jailbroke and when I uninstalled “winter board” it gave me the now service error. I dont kow what I have done to the phone,

Okay, i got it to run all of that, and i used the end of the other video, now it see’s my carrier, but no strength off the signal. It’s flat. No matter where i am, and with a different SIM inserted. Please help, i’ve got this far, i must be surely near the light at the end of the tunnel.. 🙂

I finally got it done!!!!!!!
I followed the other video to hacktivate the 5.1.1 and installed the ultrasnow and the 5.1.1 fixer, but the phone keeps searching and “no service” at the end.
Then I was trying to follow this video to fix the problem. I have just finished half way through (5:05 of this video), the white apple came up and the phone didn’t stuck there, it just go straight to the unlock screen. And the signal is back!!!!.
Thank you everyone, this site is a great help.

Hello there.
I have did all the step like you show but finally the apple logo still there for whole night , I did not turn it off and still leave it plug in to my computer !!! What should i do next Please help me, Thank you very much for your reply.

my bootrom is (88029) does that mean it’s already been fixed? so o i click yes or no… this is where i am stuck…
When I plugged in my iPhone to the redsn0w it popped up as iPhone 4… my modem firmware is 04.12.01 and my model is MC6030C, version 5.1.1 (9B206)

omg thank you sooooooooooooooooo much!!!! this worked wonders for me!!at first it said searching so i was getting worried but after like 3 seconds it gave me back my signal!!!! I’ve have gone through MONTHS of stress and sleepless nights over this phone so THANK YOU SOOOOO MUCH!!!!!! 😀 😀 😀

1) flash IOS 5.1.1. official firmware to your device using iTunes.
2) Use Redsnow 0.9.14.b1 with official IOS 5.1.1 IPSW (select extras then select manually specify IPSW from the redsnow menu)
3) choose back on the redsnow menu, put your phone into DFU mode jailbreak the device and choose these options: install cydia, upgrade with iPad baseband continue through the warnings.

4) once the jailbreak is complete, go to cydia install ultrasnow 2.5.7.
5) respring
6) go back into cydia then go to search, find mobile substrate and uninstall it. (this will also uninstall ultrasnow)

7) go back into cyida for the third time and reinstall the mobile substrate package.

restart

9 ) go back into cydia for the fourth time and reinstall ultrasnow.

10) respring

10) receive signal

Something is getting corupted during the baseband install which is causing you to have to reinstall the mobile substrate package and then ultasnow is able to unlock the phone.

woowww! Thank u, thank u, thank u!!! spent the whole day trying all kinds of methods to unlock my iphone after updating to 5.1.1. wasn,t even sure urs was gonna work but said WTF….just give it a try!!! Super happy i did! U ROCK!!

I followed Ptaz’s instructions but it didn’t work for me, phone now just shows “searching …” for ever. My iPhone is 3Gs, 32GB, old bootroom, factory unlocked. Any input to resolve this problem is greatly appreciated.

When I do ‘ultrasn0w – mobile substrate’ thing, I got an error message saying “could not activate cellular data network”. Guess that was the reason why I wasn’t successful in fixing “no service / searching …”. Did it happen happen to any one here ?

if an iPhone 3gs has new bootroom, how could you flash the phone with official FW 5.1.1 ? iTunes told me “my phone nor qualified to this built”, so I had to create a custom FW from the official FW and went from there. But “no service” and “searching…” remained. Frustrated !

i install ultrasn0w fixer for 5.1.1 and ultrasn0w but it still not unlocked my du carrier help me plz ..
I am in uae i have du ..
iphone 3gs 32gb
network: not available
Moderm Firmware:06.15.00
Model:MC133FB

i bought a 3gs older version (31weerks) it was jailbreaked but didnt want it so i tryed to restore it back to how you would get it from the shop so i could use i tunes and app store which i was told i could not use if i left it with the jailbreak but the phone just went to how it looks on the video so i tryed to activate it but it want do it when i go on itunes it just says no sim even if there is a sim in it try agian so i have been trying to jailbreak it but every time i run redsn0w and try an put it in dfu mode it just says no device detected go on you tube i have tryed to do the dfu exactly how it shows in the video if you can help i will be so happy thenks

Hi I have been given a 3gs 32gb (SN88005). I believe it has been jailbroken in the past and before but was originally on O2. I have an O2 sim card for it, not the original. The phone up dated to OS 5.1.1 before I was given it and now is stuck in searching/no service. I have tried to use the above method to recover it but I can only get as far as putting it into DFU mode where Redsnow saya it cannot detect a device. If I cancel at this point the phone will not do anything unless I connect to itunes and then it says it is in restore mode and I have to do a full restore to get it to function again .Has anyone got any answers to this.

Hey followed all the steps, fine. I will get service for about 30 seconds when ultrasn0w isnt installed, it will go to searching/no service. When I install ultrasn0w all I get is searching… any suggestions?

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heyyy..umm..i have got an iphone 3gs﻿ online from america and im in australia..i did the jailbreak..i installed ultrasn0w & ultrasn0w fixer and im getting no service at the top…so i was wandering if i could still use this method but..then use my australian sim card…..please help me!!!! 🙂

I have a iPhone 3GS-8GB and it was working fine on 4.1 with 6.15.00 BB.
It just stopped working last Friday and I have been re-installing different custom firmwares and jailbreaking it with Redsn0w following most of the video by ihelpcorner and I still can not get a signal. But today I have tried 4 different sim
Tesco (uses O2 network) – NO SERVICE
3 Network – NO SERVICE
Orange (merged with T-Mobile i think) – Signal.. get full bars after turning off 3G and it is recognised as a T-Mobile sim
T-Mobile – Signal… same as Orange since I think these companies merged?
I don’t know why this is happening but I want to use this iPhone on O2 network so I can use my Tesco sim again.

i have Iphone 3G, I upgrade to 4.2.2, after that I get no service, ’cause intall the BB 6.15, then I go back to the 4.1 and the same problem, I downgrade the BB to 5.13, and still no luck, Installed Cidya, ultrasn0w, anything possible, any idea?

I am following this video for my iPhone 3GS and when I get to the step of putting my phone in DFU, redsn0w doesn’t detect my device. I’m pretty sure I’m doing it correctly because the iPhone screen goes black and my computer makes a “duh-dun” noise (the same one as when you plug your iPhone in). When I open Itunes, it says it detects a device in restore mode (I think it usually says this either if the device is in restore or DFU mode). So it seems like my computer and Itunes are detecting the device, but redsn0w is not.

Hi! I got through all the steps to where it said that it was done and the rest was done on the device but the phone seems to have frozen and the last line of text on the phone screen says ‘panic: we are hanging here . . .’ what does this mean and how do i fix this?

hello i bought iphone 3gs from ebay and its unlocked but it was originaly 02 uk and when i go to put my sim card in it goes thru all the steps but the last step its says it needs activtion sim card. i also did all the jailbreaks and gott past the activation screen but still has no sercive after it , i tryed using sam on cydia but i need the orignal sim.. can you please help!!!!

Hi,I was using iphone 4 unlocked in India by using a gevey sim. My brother just updated the ois to 5.1.1 and lost the gevey sim. Now, the phone is jailbroken by showing “no service”. Can i use the above mentioned procedure for removing “no service”?

Hi im trying to activate my 3gs with my windows vista laptop everytime i go to redsnow and try to locate my ispw i cant find it, its says firmware and restore but and zipped so i try to extract and nothing is workin. It was an att iphone then i unlocked it but it was tethered so i accidentally let it die and then i finnaly got it off the apple screen by leaving it charging on my comp for 3 hrs but now it wont activate its saying no service and itunes is saying no sim installed. HELP PLEASE IM SO FRUSTRATED!

So…I had jailbroken my Iphone 3GS to work on T Mobile, had the 6.15 bb. It worked fine when I went back to AT&T except the signal was dropping out a lot which it hadn’t done before jailbreak. So I did a restore in Itunes. After that Itunes said no SIM installed. I hooked up with some guys on an IRC channel that helped me get the phone back on 5.13 baseband, but I still had no service. I have removed and reinstalled Ultrasnow but still no service. I have a brick on my hands. = ( HELP PLEASE! I tried my T-Mobile SIM too and still no service.

I got to the point of hactivating and when I went to put it into DFU mode it went to the apple screen and it wont leave that screen. I have been trying different things but it will just go to recovery mode. Any ideas?

hey, im putting sim pin and its right as soon as i do its says no service, now my phone is iphone 4, can i use this process on my phone or its for something else. i WANNA make sure before i start doing it. tks in forward

hi, i just got an Iphone 3gs that was locked to orange, i got it unlocked and now when i put my tesco sim in, or even the orange one that originally worked in, it just says searching… for ages, then no service? I’ve tried syncing with iTunes, and resetting it, but it just keeps doing the same thing -.-

ok my iphone 3gs was jailnbroken and unlock but after i did a factory reset the phone wont activate it stuck on the screen telling me that i need to insert orignal carrier sim and i did and it wont activate even with other carrier sim cards

Help! After I did all the things you said on the video, my iphone 3gs don’t work anymore. It stucked on connect to itunes logo. When i tried to restore it, an unknown error (-1) occured. Please help resolve my problem. What should I do? Does it mean my iphone is broken? 🙁

Hi,
I have 3GS from 2009 with old bootram. I tried to upgrade IOS6 which gave me a problem of ‘SIM’ activation issues. That could be earlier i tried to jailbreak which has cydia on phone.So after looking Hactivate 5.1 video, I jailbroke. Now is giving ‘searching…. and No SIM’ issue. I am active ATT user and they could not help as same SIM works fine in another device. Please help….

Hi i downloaded all tat but its says the connected device doesnt support the untethered options and i didnt choose cydia because i dont want to have the tethered version plz help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

hi…i have iphone 3gs were version was correpted…when i m downgrading to versi 4,1.. now it showing itune when i m updating version it finish updating and again is showing itune wat can i do plz repl me

well, the iPhone is Already in the registration process but When asking to check the (newer) model it asks you to check the serial number! how am I going to find the serial Number of the device if I cannot get to the settings and find out????????
well I took a risky choice and seems it was the wrong one. and the iPhone is dead

When its doing the stuff on the iphone there comes a message: Error, no succesful firmware download after 60000 ms!! Giving up…
What do I have to do now? nothings happening since 10 minutes and I dont want to turn the Iphone 3gs (16gb) off..
Please help me

Thanks, been at it for about a day and a half when I found this, but you should add the fact that you have to reboot after installing Cydia to the video. Found it in the comments and I also had to direct ispw to 6.0 during reboot. Other than that, worked perfectly! Thank you.

just like you i was so frustrated when i upgraded my 3gs and the result “No Service and Searching”. i researched here and i was about to do the suggestions which i believe it would really help, but due to some complications i was hesitant so i just talked to the Holy Spirit in the Name of Lord Jesus and claiming that miracle would happen, believe it or not, it worked. Hallelujah, God really is an answering God. anyway thanks even if i was not able to apply your tips, i thank you for making time to help other people. God bless you.

Any advice would be REALLY appreciated , have been trying for almost a week now.

Seems like the baseband could be an issue ?? as many forums say it is ‘unlockable’ I even just paid some money to an ebay ‘factory unlock service’ just to make sure i could work this brand new phone …..

i have jailbreak iphone 3gs ios 5.1.1(6.15.00) it was working fn but three days before it start showing no service , i have update it and it also show no sim when i remove it , there is no problem with sim its fn please help….